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3 years ago

These are keywords used with mysql_query/ mysqli_queryto update records in a table.

Computers and Technology

2 answers:

jok3333 [9.3K]3 years ago

8 0

Answer:

The answer is D

Explanation:

D. INSERT, INTO, VALUES

Brrunno [24]3 years ago

3 0

Answer:

D.insert, into, values

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Oxnard Casualty wants to ensure that their e-mail server has 99.98 percent reliability. They will use several independent server

sattari [20]

Answer:

The smallest number of servers required is 3 servers

Explanation:

Given

$Reliability = 99.98\%$

$Individual Servers = 95\%$

Required

Minimum number of servers needed

Let p represent the probability that a server is reliable and the probability that it wont be reliable be represented with q

Such that

$p = 95\%\\$

It should be noted that probabilities always add up to 1;

So,

$p + q = 1$ '

Subtract p from both sides

$p - p + q = 1 - p$

$q = 1 - p$

Substitute $p = 95\%\\$

$q = 1 - 95\%$

Convert % to fraction

$q = 1 - \frac{95}{100}$

Convert fraction to decimal

$q = 1 - 0.95$

$q = 0.05$

------------------------------------------------------------------------------------------------

To get an expression for one server

The probabilities of 1 servers having 99.98% reliability is as follows;

$p = 99.98\%$

Recall that probabilities always add up to 1;

So,

$p + q = 1$

Subtract q from both sides

$p + q - q = 1 - q$

$p = 1 - q$

So,

$p = 1 - q = 99.98\%$

$1 - q = 99.98\%$

Let the number of servers be represented with n

The above expression becomes

$1 - q^n = 99.98\%$

Convert percent to fraction

$1 - q^n = \frac{9998}{10000}$

Convert fraction to decimal

$1 - q^n = 0.9998$

Add $q^n$ to both sides

$1 - q^n + q^n= 0.9998 + q^n$

$1 = 0.9998 + q^n$

Subtract 0.9998 from both sides

$1 - 0.9998 = 0.9998 - 0.9998 + q^n$

$1 - 0.9998 = q^n$

$0.0002 = q^n$

Recall that $q = 0.05$

So, the expression becomes

$0.0002 = 0.05^n$

Take Log of both sides

$Log(0.0002) = Log(0.05^n)$

From laws of logarithm $Loga^b = bLoga$

So,

$Log(0.0002) = Log(0.05^n)$ becomes

$Log(0.0002) = nLog(0.05)$

Divide both sides by $Log0.05$

$\frac{Log(0.0002)}{Log(0.05)} = \frac{nLog(0.05)}{Log(0.05)}$

$\frac{Log(0.0002)}{Log(0.05)} = n$

$n = \frac{Log(0.0002)}{Log(0.05)}$

$n = \frac{-3.69897000434}{-1.30102999566}$

$n = 2.84310893421$

$n = 3 (Approximated)$

Hence, the smallest number of servers required is 3 servers

6 0

3 years ago

To generate a series of first ten counting number of algorithm

Anettt [7]

Uhh i need points so i don’t fail math.

3 0

3 years ago

Specialized high-capacity second storage devices designed to meet organizational demands

zzz [600]

Answer:

CD devices

Explanation:

5 0

3 years ago

Read 2 more answers

What is the software that manages and controls the activities and resources of the computer? O The CPU The OS The ALU The GUI D

Elodia [21]

Answer:

the software that manages and controls the activities and resources of the computer is OS

Explanation:

the software that manages and controls the activities and resources of the computer is OS

because here we know that CPU is hardware

and ALU is a digital circuit that is use to perform arithmetic and logic operations

and

GUI or Graphical User Interface controls the graphical interface of the applications

so here correct option is OS that is the software that manages and controls the activities and resources of the computer

7 0

3 years ago

Write a program that takes in a line of text as input, and outputs that line of text in reverse. The program repeats, ending whe

Nana76 [90]

Answer:

using System;

public class Program

{

public static void Main()

{

String input ;

while(true)

{

input = Console.ReadLine();

if(input.Equals(""quit""))

break;

Reverse_String(input);

}

return;

}

static void Reverse_String(string input_text)

{

char[] text = input_text.ToCharArray();

Array.Reverse(text);

Console.WriteLine(text);

}

Explanation:

In the above program a separate function is written to reverse the string.

This method takes the string as an argument and place it in a array and then use the built-in function reverse and print the reversed string in the console.

In the main(), the input is obtained from the console and it is passed to the reversestring(). 

7 0

3 years ago

Read 2 more answers